Roman numerals I, V, X, L, C, D, M

Learning Objectives Identify the value of the Roman numerals I, V, X, L, and C. Read Roman numerals up to 100. Write numbers from 1 to 100 using Roman numerals. Explain the rule for adding Roman numerals (e.g., VI = 6). Explain the rule for subtracting Roman numerals for 4 and 9 (e.g., IV = 4, IX = 9). Compare two numbers written as Roman numerals using <, >, or =. Have you ever seen a big clock with letters instead of numbers? 🕰️ Let's learn the secret code of these ancient numbers! Today, we will travel back in time to learn about Roman numerals, a number system used by the ancient Romans. We will learn what the symbols mean and how to use them to read and write numbers, just like a real Roman would! Real-World Applications Reading the numbers on a clock fa...

TermDefinitionExample Roman NumeralA special symbol used to write numbers in the system of ancient Rome.The letter 'V' is the Roman numeral for the number 5. IThe Roman numeral that stands for the number 1.III means 1 + 1 + 1 = 3. VThe Roman numeral that stands for the number 5.V means 5. XThe Roman numeral that stands for the number 10.XX means 10 + 10 = 20. LThe Roman numeral that stands for the number 50.L means 50. CThe Roman numeral that stands for the number 100.C means 100. ValueThe number that a Roman numeral represents.The value of X is 10.

The Additive Rule Larger Numeral + Smaller Numeral When a numeral of smaller value is written after a numeral of larger value, you add their values together. You can also add by repeating a numeral up to three times. The Subtractive Rule Larger Numeral - Smaller Numeral When a smaller numeral (like I or X) is written before a larger numeral, you subtract the smaller value from the larger value. This is a shortcut for writing 4s and 9s.